Chair



FIG. 1 is a front perspective view of a chair;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right side elevation view thereof, the opposite side elevation view being a mirror image;

FIG. 4 is a rear elevation view thereof; and,

FIG. 5 is a top plan view thereof.

The objects show in dotted lines depict environment and form no part of the claimed design. 

CLAIM The ornamental design for a chair, as shown and described. 